Now, sir, young Fortinbras, Of unimproved mettle hot and full, Hath in the skirts of Norway, here and there, Shark’d up a list of lawless resolutes, For food and diet, to some enterprise That hath a stomach in’t; which is no other,— As it doth well appear unto our state,— But to recover of us, by strong hand, And terms compulsatory, those foresaid lands So by his father lost: and this, I take it, Is the main motive of our preparations, The source of this our watch, and the chief headů

There are no more uses of "mettle" in the play.

Show samples from other sources

The Trials are a test of my mettle.

Sabaa Tahir -- An Ember in the Ashes

But I will say, too, that for every man who showed no fear or hesitance, there were three or four or five others whose mettle was as unashamedly wan and mortal as yours or mine.